We just purchased a 1997 Pontiac Trans Sport Montana, but the radio display light doesn't light and the gas gauge doesn't work? It's hard to set the radio stations, but more importantly we don't know how much fuel we have in the tank. Is there a sensor or fuse that needs replacing? Thank you.
The gas guage is likely a bad ground to the gas tank. Check the wiring harness where it comes from the body and goes into the gas tank. Likely there is broken wire there. The harness usually has 2 or 3 wires one may be neutral for both the pump and the fuel gauge. or 2 wires each. An Ohm (resistance) tester will show a particular amount of resistance on 2 wires indicating that the fuel guage is working properly as the resistance will be different depending on how much gas is in the tank. You should be able to buy a cheap digital tester for $10.00
It is likely that these wires are damaged close to the tank or in that harness area that is exposed to the elements, perhaps even at the spot where it goes back into the body or where the harness joins to the tank harness connector. Look for broken or corroded wires here. Try running a piece of wire from the body to the gas tank and see if it makes the fuel guage work indicating a bad ground to the tank.
SOURCE: Gas Gauge not working
when the fuel pump was installed the gas tank sending unit was either jammed when put back in the tank, is defective, or the sending unit was no reconnected.
SOURCE: Fuel Gauge Stuck on Full 98 Pontiac Montana
When gauge is pegged at full, usually means a bad ground. Check wires at fuel tank, wiggle around, maybe one came off. The bad news is it is hard to get to without removing the tank. Sometimes you can reach arm in and get to them. Also check body ground at read of van.
SOURCE: Air bag Light Stuck On 98 Pontiac Montana
Under the front seats you have wires going to your seat belt anchors.These wires are atached to a sensor witch activate the air bags if the anchors have force pull on them.The wires have plugs under the seat.Disconnect the plugs and spray with electical cleaner and replace.Make sure the ignition is switched off befor you attemt doing.90%of the time this will work.good luck.
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SOURCE: i need to replace de fuel presurre sensor in a
Replacing the fuel pressure regulator, involves just replacing the regulator at the end of the fuel rail in the engine compartment, but fuel pressure sensor - does this mini-van have a fuel pressure sensor?
replacing the fuel pressure regulator: (1) locate it at the end of the fuel rail in the engine compartment,
(2) relieve fuel system pressure (3) disconnect fuel pressure regulator vacuum line. (4) remove fuel pressure regulator retaining screw (retain for re-use (5) using a shop towel to catch spilled fuel, lift & twist Fuel pressure regulator to remove it from the fuel rail. (6) remove/discard retainer and spacer bracket from the fuel rail. (7) remove fuel pressure regulator from the engine fuel return pipe. (8) remove/discard Fuel Pressure Regulator inlet O-ring (9) Check Fuel Pressure Regulator filter screen for contamination - if contaminated, replace Fuel Pressure Regulator. (10) Lubricate new Fuel Pressure Regulator inlet O-ring with clean engine oil & install onto the Fuel Pressure Regulator inlet. (11) Install the fuel return pipe onto the Fuel Pressure regulator (12) Install new retainer & spacer bracket into the slot on the fuel rail.
(13) Install Fuel Pressure Regulator onto Fuel Rail & tighten Engine Fuel Return Pipe nut to 13 ft-lbs (17 Nm). (14) connect Fuel Pressure Regulator vacuum line, (15) Install Fuel Pressure Regulator attachng screw & tighten to 76 in-lbs (8.5 Nm). (16) Inspect & verify that retainer & spacer bracket is engaged in the slots on the fuel rail. Grasp & pull on the Fuel Pressure Regulator.
to ensure that the Fuel Pressure Regulator is properly seated. (17) inspect for fuel leaks with this
procedure: On 2sec,(holy rollers), off 10sec will be left on, inspect for leaks while running.
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